2921-34-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2921-34-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,9,2 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 2921-34:
(6*2)+(5*9)+(4*2)+(3*1)+(2*3)+(1*4)=78
78 % 10 = 8
So 2921-34-8 is a valid CAS Registry Number.